Atmospheric Biogenic Organic Emissions: Missing Compounds and Unrepresented Processes

大气生物有机排放：缺失的化合物和未代表性的过程

• 批准号: 1643042
• 负责人: Alex Guenther
• 金额: $ 53.15万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-12-01 至 2021-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1643042&HistoricalAwards=false
• 关键词: Atmospheric; Biogenic; Organic; Emissions; Missing

This project consists of a combined laboratory-modeling approach to identifying missing biogenic volatile compounds (BVOC) emitted into the atmosphere by plant and biological material. Research into the influence of microbes on BVOC emissions is a particularly innovative aspect of this project. Information on missing BVOC emissions will be integrated into a new version of the Model of Emissions of Gases and Aerosols from Nature (MEGAN3) Model.Four scientific questions are addressed by this study: (1) Can BVOC emissions induced by extreme weather and pollution stress influence atmospheric distributions of aerosol and oxidants? (2) Do microbes living on leaf surfaces regulate BVOC emissions into the atmosphere and modify their impact on ozone and aerosol? (3) Do missing BVOC compounds contribute to the total production of aerosol and ozone? (4) How sensitive are model predictions of air quality and climate to feedbacks associated with missing BVOC and unrepresented emission processes? The expected outcomes of this research include a quantitative understanding of the role of BVOC in atmospheric chemistry, improved air quality and climate predictions, and more effective strategies to optimize land-use, air quality, and climate management.

该项目包括一个综合实验室建模方法，以确定植物和生物材料排放到大气中的缺失的生物挥发性化合物（BVOC）。 研究微生物对BVOC排放的影响是该项目的一个特别创新的方面。 为了将缺失的BVOC排放信息纳入新版本的天然气和气溶胶排放模型（MEGAN 3），本研究探讨了以下四个科学问题：（1）极端天气和污染胁迫引起的BVOC排放是否会影响大气气溶胶和氧化剂的分布？ (2)生活在树叶表面的微生物是否调节BVOC排放到大气中并改变其对臭氧和气溶胶的影响？ (3)缺少BVOC化合物是否会导致气溶胶和臭氧的总生成？ (4)空气质量和气候的模式预测对与BVOC缺失和未代表排放过程相关的反馈有多敏感？ 这项研究的预期成果包括定量了解BVOC在大气化学中的作用，改善空气质量和气候预测，以及优化土地利用，空气质量和气候管理的更有效策略。

项目成果

Isoprene Emissions Response to Drought and the Impacts on Ozone and SOA in China

• DOI: 10.1029/2020jd033263
• 发表时间: 2021-04
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: Pengfei Wang;Yiming Liu;J. Dai;Xiao Fu;Xuemei Wang;A. Guenther;Tao Wang

Sensitivity of isoprene emissions to drought over south-eastern Australia: Integrating models and satellite observations of soil moisture

异戊二烯排放对澳大利亚东南部干旱的敏感性：整合土壤湿度模型和卫星观测

• DOI: 10.1016/j.atmosenv.2019.04.038
• 发表时间: 2019
• 期刊: Atmospheric Environment
• 影响因子: 5
• 作者: Emmerson, Kathryn M.;Palmer, Paul I.;Thatcher, Marcus;Haverd, Vanessa;Guenther, Alex B.
• 通讯作者: Guenther, Alex B.

Isoprene emission response to drought and the impact on global atmospheric chemistry

• DOI: 10.1016/j.atmosenv.2018.01.026
• 发表时间: 2018-06-01
• 期刊: ATMOSPHERIC ENVIRONMENT
• 影响因子: 5
• 作者: Jiang, Xiaoyan;Guenther, Alex;Pallardy, Stephen
• 通讯作者: Pallardy, Stephen

PTR-TOF-MS eddy covariance measurements of isoprene and monoterpene fluxes from an eastern Amazonian rainforest

亚马逊东部雨林异戊二烯和单萜通量的 PTR-TOF-MS 涡流协方差测量

• DOI: 10.5194/acp-20-7179-2020
• 发表时间: 2020
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: Sarkar, Chinmoy;Guenther, Alex B.;Park, Jeong-Hoo;Seco, Roger;Alves, Eliane;Batalha, Sarah;Santana, Raoni;Kim, Saewung;Smith, James;Tóta, Julio
• 通讯作者: Tóta, Julio